@article {1990,
	title = {Existence of solutions for a class of non-convex differential inclusions},
	journal = {Rend.Sem.Mat.Univ. Padova, 83 (1990), 71-76},
	number = {SISSA;31/89/M},
	year = {1990},
	publisher = {SISSA Library},
	url = {http://hdl.handle.net/1963/792},
	author = {Fabio Ancona and Giovanni Colombo}
}
